DEXCOM INC — Director's Dealing 2014

Aug 28, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2014-08-26

Reporting Person: MOY JEFFREY (SVP, Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-08-26	Common Stock	M	10000.0	$9.8	Acquired	107916	Direct
2014-08-26	Common Stock	S	10000.0	$45.5	Disposed	97916	Direct
2014-08-26	Common Stock	M	6663.0	$6.33	Acquired	104579	Direct
2014-08-26	Common Stock	S	6663.0	$45.0	Disposed	97916	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-08-26	Non-Qualified Stock Option (right to buy)	$6.33	M	6663.0	Disposed	2018-09-24	Common Stock (6663)	Direct
2014-08-26	Non-Qualified Stock Option (right to buy)	$9.8	M	10000.0	Disposed	2020-03-12	Common Stock (10000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	146662	Indirect

Footnotes

F1: Included in this number are 97,916 unvested restricted stock units, 50,000 of which were granted on March 8, 2014 and shall vest through March 8, 2017, 33,333 of which were granted on March 11, 2013 and shall vest through March 11, 2016, and 14,583 of which were granted on March 8, 2012 and shall vest through March 8, 2015.

F2: Shares are held by the Moy Family Trust U/A/D 12/09/2013, with respect to which the reporting person is a trustee.